1、VDD的意思：电源电压（单极器件）；电源电压（4000系列数字电 路）；漏极电压（场效应管）。
2、VCC的意思：电源电压（双极器件）；电源电压（74系列数字电路）；声控载波（Voice Controlled Carrier)。
3、VSS的意思：通常指电路公共接地端电压或电源负极。
4、VEE的意思：负电压供电；场效应管的源极（S）。
二、在电路里的晶体管上:
1、VSS表示连接到场效应管的源极（Source）的电源。
2、 VDD表示连接到场效应管的漏极（Drain）的电源。
3、VEE表示连接到三极管发射极（Emitter）的电源。
4、 VCC表示连接到三极管集电极（Collector）的电源
扩展资料
TIA/EIA-568-A 标准规定了连接多个IDF（中间配线间）到主MDF（主配线间）要通过垂直布线，也称作主干布线。VCC通常使用光纤是因为垂直布线的长度通常都比5e类双绞线限制的100m长。
在电子电路中，VCC是电路的供电电压, VDD是芯片的工作电压：
VCC：C=circuit 表示电路的意思, 即接入电路的电压， D=device 表示器件的意思, 即器件内部的工作电压，在普通的电子电路中，一般Vcc>Vdd !
VSS：S=series 表示公共连接的意思，也就是负极。
有些IC 同时有VCC和VDD， 这种器件带有电压转换功能。
在“场效应”即COMS元件中，VDD乃CMOS的漏极引脚，VSS乃CMOS的源极引脚， 这是元件引脚符号，它没有“VCC”的名称。
In circuit diagrams and circuit analysis, there are long-standing conventions regarding the naming of voltages, currents, and some components.[3] In the analysis of a bipolar junction transistor, for example in a common emitter configuration, the DC voltage at the collector, emitter, and base (with respect to ground) may be written as VC, VE, and VB, respectively. Resistors associated with these transistor terminals may be designated RC, RE, and RB. In order to create the DC voltages, the furthest voltage, beyond these resistors or other components if present, was often referred to as VCC, VEE, and VBB. In practice VCC and VEE then refer to the plus and minus supply lines respectively in common NPN circuits. Note that VCC would be negative and VEE would be positive in equivalent PNP circuits.
Exactly analogous conventions were applied to field-effect transistors with their drain, source and gate terminals.[3] This led to VD and VS being created by supply voltages designated VDD and VSS in the more common circuit configurations. In equivalence to the difference between NPN and PNP bipolars, VDD is positive with regard to VSS in the case of n-channel FETs and MOSFETs and negative for circuits based on p-channel FETs and MOSFETs.
